Karyological and Nuclear DNA Variation in Iranian Endemic Muskmelon (Cucumis melo var. inodorus)

Karimzadeh, Ghasem; Mousavi, Seyed Hossein; Kermani, Maryam Jafarkhani; Jalali-Javaran, Mokhtar

doi:10.1508/cytologia.75.451

Cited by 17 publications

(17 citation statements)

References 29 publications

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“…Previous studies also indicated that there was significant correlation between genome size and some phenotypic traits as well as geographic locations in various plant species, including Diphasiastrum sp. (Hanusova et al, 2014), Lathyrus sativus (Karimzadeh et al, 2011), and Iranian endemic muskmelon (Karimzadeh et al, 2010). Beaulieu et al (2008) reported that genome size had a strong and significant correlation with cell size and stomatal density in 101 species of angiosperms.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, cytological studies can be powerful tools to evaluate walnut genetic diversity. Among cytological traits, nuclear DNA content (C-value) is a key characteristic in plant breeding and in evaluating germplasm (Abedi et al, 2015;Dole zel and Bartos, 2005;Dole zel et al, 2007;Greilhuber et al, 2005;Karimzadeh et al, 2010;Karimzadeh et al, 2011;Knight et al, 2005;Mahdavi and Karimzadeh, 2010). The term C-value was first described by Swift (1950) as the DNA amount of an unreplicated haploid chromosome complement i.e., a gamete (Greilhuber et al, 2005).…”

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confidence: 99%

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Genome Size: A Novel Predictor of Nut Weight and Nut Size of Walnut Trees

Sarikhani¹,

Arzani²,

Karimzadeh³

et al. 2018

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Plant genetic diversity is the fundamental of plant-breeding programs to improve desirable characteristics. Hence, evaluation of genetic diversity is the first step in fruit-breeding programs. Accordingly, the current study was carried out to evaluate 25 superior walnut genotypes in respect of phenotypic and cytological characteristics. For this purpose, 560 walnut genotypes in southwest of Iran were evaluated based on UPOV and International Plant Genetic Resources Institute (IPGRI) descriptor. After a 2-year primary evaluation, 25 superior genotypes were selected for future phenotypic and genome size assessment. Flow cytometry was used to estimate genome size of the selected superior genotypes. A high genetic diversity was found in walnut population collected from the southwest of Iran. The selected superior genotypes had high yield, lateral bearing, thin-shell thickness (0.90–1.64 mm), high nut (12.54–19.80 g) and kernel (7.02–9.91 g) weight with light (L) to extra light (EL) kernel color which easily can be removed from the shell. Also, FaBaCh2 genotype turned out to be protogynous being important as a pollinizer cultivar. In addition to extensive phenotypic analysis, genome size was determined. The studied genotypes were diploid (2n = 2x = 32) and varied in genome size from 1.29 (FaBaAv2) to 1.40 pg (FaBaNs12). Correlation analysis showed that lateral bearing, budbreak date, nut size, and weight were the main variables contributing to walnut production. A linear relationship was found between genome size and nut weight (r = 0.527**), kernel weight (r = 0.551**), and nut size index (NSI) (r = 0.487**). Therefore, genome size can be considered as a strong and valuable tool to predict nut and kernel weight and nut size.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Genome Size: A Novel Predictor of Nut Weight and Nut Size of Walnut Trees

Sarikhani¹,

Arzani²,

Karimzadeh³

et al. 2018

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“…It is thus concluded that the genome size of A. khorassanica populations is independent of changes in environmental conditions. Karimzadeh et al (2010), working on 20 populations of Iranian endemic muskmelon (Cucumis melo var. inodorus), reported no relationship between genome size and altitude and longitude, but a close relationship was detected between latitude and nuclear DNA amount.…”

Section: Discussionmentioning

confidence: 99%

“…quick method for estimating the genome size (2C DNA) for a wide range of plant communities (Garcia et al, 2004;Doležel and Bartoš, 2005;Doležel et al, 2007;Loureiro et al, 2007;Mahdavi and Karimzadeh, 2010;Majdi et al, 2010;Karimzadeh et al, 2010Karimzadeh et al, , 2011Abedi et al, 2015;Tavan et al, 2015;Tarkesh Esfahani et al, 2016;Javadian et al, 2017). The term "C-value" refers to the constant amount of DNA of an unreplicated haploid chromosome complement (Swift, 1950).…”

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confidence: 99%

Assessment of Iranian endemic Artemisia khorassanica : karyological, genome size, and gene expressions involved in artemisinin production

Hamidi¹,

Karimzadeh²,

Monfared³

et al. 2018

Turk J Biol

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IntroductionArtemisia L. is the largest genus of small herbs and shrubs belonging to the family Asteraceae. It comprises over 500 species, which are mainly found in Asia, Europe, and North America (Bora and Sharma, 2011). Asia has the greatest concentration of species and there are 35 species of this genus in Iran (Abad et al., 2012), some of which are endemic to Iran, e.g., A. khorassanica. Data about karyotypes can be helpful in species recognition and analysis of hybrid populations in genetic and breeding studies (Anjali and Srivastava, 2012). The genus Artemisia has two basic chromosome numbers of x = 9, present in all the subgenera, and the less frequent x = 8, present in some subgenera (Oliva and Vallès, 1994;McArthur and Sanderson, 1999;Dolatyari et al., 2013). The reason for this descending dysploidy, reducing the basic chromosome number from x = 9 to 8, may have been a centric Robertsonian chromosome fusion, as is widely accepted (Vallès and Siljak-Yakovlev, 1997;Pellicer et al., 2011). Moreover, a basic number of x = 7 was previously reported for Artemisia pattersonii by Wiens and Richter (1966). Flow cytometry is known as the most reliable and quick method for estimating the genome size (2C DNA) for a wide range of plant communities (

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“…In order to achieve best separation of the chromosomes at metaphase, roots were placed in KCl (0.1 M, 0.56% (w/w)) for 60 min at RT. They were subsequently fixed in Carnoy s fixative (glacial acetic acid : ethanol; 1 : 3 v/v) overnight at 4 C (Karimzadeh et al 2010, Ebadi-Almas et al 2012, Shariat et al 2013, Jafari et al 2014, Abedi et al 2015. After thorough washing with distilled water, the roots were transferred to 70% (v/v) aqueous ethanol, and stored in a refrigerator until used.…”

Section: Methodsmentioning

confidence: 99%

Karyological Studies of <i>Fritillaria</i> (Liliaceae) Species from Iran

et al. 2016

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Summary Five species (13 ecotypes) belonging to three subgenera of ornamental-medicinal Iranian Fritillaria were karyotypically studied, using a standard squash technique. All species were diploid (2n=2x=24) having mean chromosome lengths of 15.8 µm (15.2-16.7 µm). Their satellites varied in number (1-3 pairs) and in size (1.2-2.6 µm), mostly being located on long arms. Four chromosome types ( m , sm , st , T ) formed 10 different karyotype formulas: T type chromosome is reported for the first time in most species (with the exception of S4, Fritillaria. reuteri Boissi). ANOVA confirmed significant intra-and inter-specific chromosomal variation across the Iranian Fritillaria species. Twelve different methods were used to assess the degree of karyotype asymmetry. Among those, one qualitative parameter (Stebbins classification) and eight quantitative (CV TL , DI, A 1 & A 2 , AI, A, AsK%, M CA , CV CI ) parameters verified that S2 (F. gibbosa Boiss.) and S5 (F. zagrica Stapf.) species represented the most asymmetrical and symmetrical karyotypes, respectively.

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Karyological and Nuclear DNA Variation in Iranian Endemic Muskmelon (Cucumis melo var. inodorus)

Cited by 17 publications

References 29 publications

Genome Size: A Novel Predictor of Nut Weight and Nut Size of Walnut Trees

Genome Size: A Novel Predictor of Nut Weight and Nut Size of Walnut Trees

Assessment of Iranian endemic Artemisia khorassanica : karyological, genome size, and gene expressions involved in artemisinin production

Karyological Studies of <i>Fritillaria</i> (Liliaceae) Species from Iran

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